roller joint check guns are not obsolete just expensive
The roller check joint guns are not, were not, obsolete they were just more expensive to build. The roller check joint system is the best mechanical spent shell EXTRACTOR system. I myself do not like ejectors, I prefer EXTRACTORS over ejectors. I would not build a monoblock from scratch for this project I would create a monoblock from an old set of wrecked barrels that were roller check joint barrels. Be very alert to the distance between the centers of the firing pins in the frame and the centers of the bores of the barrels that you use to create a monoblock. Good Shooting To You, Jent.
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